In a series of experiments , Griffith infected mice with nonvirulent R -strain bacteria and highly virulent S -strain bacteria . Heat -killed S bacteria were nonvirulent . However , the nonvirulent heat -killed bacteria and the nonvirulent R bacteria together produced a virulent mixture . What did this demonstrate ? A. A transforming principle in the bacteria allowed the nonvirulent R strain to become virulent . B. The molecules present on the outside of bacteria determine whether it's virulent or nonvirulent . C. The S -strain bacteria had not been killed completely . D. The translation of proteins , carbohydrates , lipids , and DNA is important in determining bacterial virulence .

In 1896, a 308-page edition of  the american wheelmanearned the distinction of being "the largest magazine ever issued from a printing press,” according to the advertising journal  printers’ ink. which accurately describes this statement? it is subjective because the information contained in this statement cannot be proven. it is subjective because everyone would agree with the information contained in this statement. it is subjective because the information contained in this statement can not be proven. it is objective because the information contained in this statement can be proven. it is objective because not everyone would agree with the information contained in this statement.

In the story "seventh grade," how do victor's hopes and expectations about teresa at the beginning of the school day compare with his hopes and expectations about teresa at the end of the school day? his hopes and expectations are exactly the same at the end of the day. his hopes and expectations are completely different at the end of the day. his hopes and expectations are strengthened by the end of the day. his hopes and expectations are weakened by the end of the day.

What is the effect of narrator's word choice on the tone of this passage? the words "my heart shrank within itself" create a fearful tone. the words "wounded his fellow" develop a remorseful tone. the words "struck harsh upon my ears" suggest an irritated tone. the words "better-omened" set a hopeful tone. excerpt from "the cabuliwallah" by rabindranath tagore i was sitting in my study, looking through the accounts, when some one entered, saluting respectfully, and stood before me. it was rahmun the cabuliwallah. at first i did not recognise him. he had no bag, nor the long hair, nor the same vigour that he used to have. but he smiled, and i knew him again. "when did you come, rahmun? " i asked him. "last evening," he said, "i was released from jail." the words struck harsh upon my ears. i had never before talked with one who had wounded his fellow, and my heart shrank within itself when i realised this; for i felt that the day would have been better-omened had he not turned up.